This 3D scatter plot visualizes the relationship between sleep duration, REM sleep percentage, and deep sleep percentage, using data from a sleep-efficiency CSV file fetched from GitHub. The visualization uses Plotly.js to render the interactive `scatter3d` trace, with D3.js handling CSV parsing via `Plotly.d3.csv` and data extraction through the custom `unpack` function. Each point represents a sleep record, colored and sized uniformly, with axes labeled for all three variables.